/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 08:22:25,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 08:22:25,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 08:22:25,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 08:22:25,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 08:22:25,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 08:22:25,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 08:22:25,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 08:22:25,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 08:22:25,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 08:22:25,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 08:22:25,257 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 08:22:25,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 08:22:25,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 08:22:25,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 08:22:25,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 08:22:25,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 08:22:25,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 08:22:25,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 08:22:25,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 08:22:25,299 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 08:22:25,322 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 08:22:25,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 08:22:25,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 08:22:25,328 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 08:22:25,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 08:22:25,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 08:22:25,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 08:22:25,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 08:22:25,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 08:22:25,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 08:22:25,331 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 08:22:25,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 08:22:25,331 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 08:22:25,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 08:22:25,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 08:22:25,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 08:22:25,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 08:22:25,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 08:22:25,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 08:22:25,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 08:22:25,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 08:22:25,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 08:22:25,334 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 08:22:25,334 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 08:22:25,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 08:22:25,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 08:22:25,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 08:22:25,884 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 08:22:25,885 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 08:22:25,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound1.c [2021-05-01 08:22:25,983 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ba1801e4/edc147bc948046f1b3200eac5993d592/FLAG5cbae3c16 [2021-05-01 08:22:26,639 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 08:22:26,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound1.c [2021-05-01 08:22:26,653 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ba1801e4/edc147bc948046f1b3200eac5993d592/FLAG5cbae3c16 [2021-05-01 08:22:26,993 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ba1801e4/edc147bc948046f1b3200eac5993d592 [2021-05-01 08:22:26,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 08:22:27,001 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 08:22:27,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 08:22:27,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 08:22:27,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 08:22:27,014 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:22:26" (1/1) ... [2021-05-01 08:22:27,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@110360fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:27, skipping insertion in model container [2021-05-01 08:22:27,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:22:26" (1/1) ... [2021-05-01 08:22:27,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 08:22:27,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 08:22:27,254 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound1.c[490,503] [2021-05-01 08:22:27,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:22:27,289 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 08:22:27,308 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound1.c[490,503] [2021-05-01 08:22:27,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:22:27,349 INFO L208 MainTranslator]: Completed translation [2021-05-01 08:22:27,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:27 WrapperNode [2021-05-01 08:22:27,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 08:22:27,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 08:22:27,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 08:22:27,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 08:22:27,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:27" (1/1) ... [2021-05-01 08:22:27,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:27" (1/1) ... [2021-05-01 08:22:27,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:27" (1/1) ... [2021-05-01 08:22:27,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:27" (1/1) ... [2021-05-01 08:22:27,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:27" (1/1) ... [2021-05-01 08:22:27,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:27" (1/1) ... [2021-05-01 08:22:27,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:27" (1/1) ... [2021-05-01 08:22:27,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 08:22:27,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 08:22:27,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 08:22:27,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 08:22:27,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 08:22:27,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 08:22:27,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 08:22:27,560 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 08:22:27,560 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 08:22:27,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 08:22:27,560 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 08:22:27,560 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 08:22:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 08:22:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 08:22:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 08:22:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 08:22:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 08:22:27,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 08:22:27,562 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 08:22:27,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 08:22:27,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 08:22:27,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 08:22:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 08:22:27,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 08:22:27,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 08:22:27,962 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 08:22:27,963 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-01 08:22:27,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:22:27 BoogieIcfgContainer [2021-05-01 08:22:27,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 08:22:27,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 08:22:27,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 08:22:27,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 08:22:27,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:22:26" (1/3) ... [2021-05-01 08:22:27,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b323a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:22:27, skipping insertion in model container [2021-05-01 08:22:27,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:22:27" (2/3) ... [2021-05-01 08:22:27,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b323a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:22:27, skipping insertion in model container [2021-05-01 08:22:27,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:22:27" (3/3) ... [2021-05-01 08:22:27,975 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound1.c [2021-05-01 08:22:27,986 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 08:22:27,991 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 08:22:28,026 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 08:22:28,065 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 08:22:28,065 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 08:22:28,065 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 08:22:28,065 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 08:22:28,065 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 08:22:28,065 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 08:22:28,066 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 08:22:28,066 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 08:22:28,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-01 08:22:28,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-01 08:22:28,091 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:22:28,092 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:22:28,093 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:22:28,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:22:28,100 INFO L82 PathProgramCache]: Analyzing trace with hash -587582002, now seen corresponding path program 1 times [2021-05-01 08:22:28,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:22:28,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225149395] [2021-05-01 08:22:28,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:22:28,191 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:22:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:22:28,390 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:28,393 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:28,395 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:28,397 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:28,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:22:28,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:22:28,503 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:28,504 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:28,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-01 08:22:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:22:28,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:28,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:28,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:28,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:28,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-01 08:22:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:22:28,549 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:28,550 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:28,552 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:28,552 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:28,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-01 08:22:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:22:28,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:28,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:28,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:28,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:28,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-01 08:22:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:22:28,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:28,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:28,580 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:28,581 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:28,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-05-01 08:22:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:22:28,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:28,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:28,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:28,599 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:28,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-05-01 08:22:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:22:28,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:28,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:28,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:22:28,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:22:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-05-01 08:22:28,629 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:22:28,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225149395] [2021-05-01 08:22:28,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [225149395] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:22:28,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:22:28,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 08:22:28,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721612798] [2021-05-01 08:22:28,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 08:22:28,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:22:28,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 08:22:28,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 08:22:28,687 INFO L87 Difference]: Start difference. First operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-01 08:22:29,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:22:29,012 INFO L93 Difference]: Finished difference Result 73 states and 118 transitions. [2021-05-01 08:22:29,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 08:22:29,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2021-05-01 08:22:29,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:22:29,025 INFO L225 Difference]: With dead ends: 73 [2021-05-01 08:22:29,026 INFO L226 Difference]: Without dead ends: 35 [2021-05-01 08:22:29,032 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 08:22:29,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-01 08:22:29,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-05-01 08:22:29,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-01 08:22:29,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2021-05-01 08:22:29,122 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 43 [2021-05-01 08:22:29,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:22:29,123 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2021-05-01 08:22:29,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-01 08:22:29,124 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2021-05-01 08:22:29,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-01 08:22:29,127 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:22:29,128 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:22:29,128 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 08:22:29,129 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:22:29,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:22:29,130 INFO L82 PathProgramCache]: Analyzing trace with hash 987777007, now seen corresponding path program 1 times [2021-05-01 08:22:29,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:22:29,131 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377817669] [2021-05-01 08:22:29,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:22:29,140 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:22:29,169 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-01 08:22:29,169 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 08:22:29,175 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 08:22:29,198 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-01 08:22:29,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 08:22:29 BoogieIcfgContainer [2021-05-01 08:22:29,200 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 08:22:29,203 INFO L168 Benchmark]: Toolchain (without parser) took 2202.41 ms. Allocated memory is still 185.6 MB. Free memory was 150.7 MB in the beginning and 140.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 11.3 MB. Max. memory is 8.0 GB. [2021-05-01 08:22:29,205 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 185.6 MB. Free memory is still 166.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 08:22:29,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.17 ms. Allocated memory is still 185.6 MB. Free memory was 150.3 MB in the beginning and 140.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-01 08:22:29,206 INFO L168 Benchmark]: Boogie Preprocessor took 118.81 ms. Allocated memory is still 185.6 MB. Free memory was 140.3 MB in the beginning and 168.2 MB in the end (delta: -27.9 MB). Peak memory consumption was 7.2 MB. Max. memory is 8.0 GB. [2021-05-01 08:22:29,207 INFO L168 Benchmark]: RCFGBuilder took 494.21 ms. Allocated memory is still 185.6 MB. Free memory was 167.8 MB in the beginning and 151.4 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-05-01 08:22:29,207 INFO L168 Benchmark]: TraceAbstraction took 1233.33 ms. Allocated memory is still 185.6 MB. Free memory was 151.0 MB in the beginning and 140.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 11.4 MB. Max. memory is 8.0 GB. [2021-05-01 08:22:29,209 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 185.6 MB. Free memory is still 166.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 343.17 ms. Allocated memory is still 185.6 MB. Free memory was 150.3 MB in the beginning and 140.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 118.81 ms. Allocated memory is still 185.6 MB. Free memory was 140.3 MB in the beginning and 168.2 MB in the end (delta: -27.9 MB). Peak memory consumption was 7.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 494.21 ms. Allocated memory is still 185.6 MB. Free memory was 167.8 MB in the beginning and 151.4 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1233.33 ms. Allocated memory is still 185.6 MB. Free memory was 151.0 MB in the beginning and 140.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 11.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int x, y; [L20] long long a, b, p, q, r, s, c, k, xy, yy; [L21] x = __VERIFIER_nondet_int() [L22] CALL assume_abort_if_not(x>=0 && x<=1) [L8] COND FALSE !(!cond) [L22] RET assume_abort_if_not(x>=0 && x<=1) [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(y>=0 && y<=1) [L8] COND FALSE !(!cond) [L24] RET assume_abort_if_not(y>=0 && y<=1) [L25] CALL assume_abort_if_not(x >= 1) [L8] COND FALSE !(!cond) [L25] RET assume_abort_if_not(x >= 1) [L26] CALL assume_abort_if_not(y >= 1) [L8] COND FALSE !(!cond) [L26] RET assume_abort_if_not(y >= 1) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 [L32] r = 0 [L33] s = 1 [L34] c = 0 [L35] k = 0 [L36] xy = (long long) x * y [L37] yy = (long long) y * y [L38] CALL assume_abort_if_not(xy < 2147483647) [L8] COND FALSE !(!cond) [L38] RET assume_abort_if_not(xy < 2147483647) [L39] CALL assume_abort_if_not(yy < 2147483647) [L8] COND FALSE !(!cond) [L39] RET assume_abort_if_not(yy < 2147483647) [L41] COND TRUE 1 [L42] COND TRUE !(b != 0) [L71] CALL __VERIFIER_assert(q*x + s*y == 0) [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1114.1ms, OverallIterations: 2, TraceHistogramMax: 6, EmptinessCheckTime: 16.7ms, AutomataDifference: 361.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 38 SDtfs, 20 SDslu, 3 SDs, 0 SdLazy, 15 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 137.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 72.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...